Linear Models
Deepen your command of linear relationships — slope, equations of lines, real-world modeling, and fitting lines to data.
Estimated Time
2–3 weeks
Difficulty
Intermediate
Overview
Unit description, learning objectives, and skills.
Unit 2 — Linear Models treats linear functions as precise tools for modeling the real world. You will revisit slope and intercepts with greater rigor, connecting algebraic forms to the rate-of-change language from Unit 1. A major focus is building models from context — given a situation in words, a table, or a scatter plot, you will write a function, use it to make predictions, and fit a line to real data using least-squares regression.
Learning Objectives
By the end of this unit, you will be able to:
Skills You Will Master
Real-World Connection
Linear models are everywhere. A rideshare app calculates your fare using a linear function of distance. A scientist plots experimental data and fits a line to find a trend. A business analyst uses regression to forecast next quarter's sales. Even the GPS in your phone uses linear interpolation to estimate your position between known points. Mastering linear models gives you a universal tool for describing change — and every other function type in this course is compared against the linear baseline.
Chapter Checklist
Recommended steps for completing each chapter
- Read the Workbook
- Complete the Independent Study
- Finish the Exit Ticket
- Take the Quiz
- Review the Answer Key
- Continue to the Next Chapter